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Squalus hima Sweta & Bineesh, 2024 Indian spurdog |
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photo by
Sweta, B. / Bineesh, K.K. |
| Family: | Squalidae (Dogfish sharks) | |||
| Max. size: | 47.5 cm TL (male/unsexed); 38.8 cm TL (female) | |||
| Environment: | benthopelagic; marine; depth range 300 - 600 m | |||
| Distribution: | Western Indian Ocean: India. | |||
| Diagnosis: | Vertebrae: 84-86. This species is distinguished from its regional congeners species by the following characters: snout short and pointed, its length 5.6-6.0% of TL and 22.8-24.1% of HL; pre-orbital length 5.8-6.5 % of TL; prenarial length in inner nostril-narial furrow space is 0.88-1.58; external nasal opening is rounded in shape; teeth in both jaws are of similar shape and structure; teeth of upper jaw smaller than lower jaw; body high and slightly arched from the dorsal origin of first gill slit to pre-first dorsal fin; spiracles placed little above the eyes; eye to spiracle space is 0.7-0.9% of TL; head height is 1.2-1.4 in trunk height; the origin of first dorsal fin behind the insertion of pectoral fin; second dorsal fin positioned between pelvic & caudal fins; first dorsal spine length is 1.9-2.9% TL; second dorsal spine length is 2.8-3.6% TL; pelvic fin free rear tip is pointed; no anal fin; caudal fin large with upper lobe wide and dorsal margin almost straight in shape; flank denticles are tricuspid; vertebrae, monospondylous 16-22; pre-caudal 61-63; caudal 23; total vertebrae 84-86 (Ref. 131348) | |||
| Biology: | ||||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 25 August 2024 Ref. (130435) | |||
| Threat to humans: | harmless | |||